The president noted that Donnelly had also been a no vote on Obamacare and tax reform - decisions which earned him the nickname "Sleepin' Joe." The Republican National Committee gave Donnelly a similar sounding nickname via a press release Thursday - "Do-Nothing Donnelly."

"This November, Indiana will face an important choice," Trump said. "You can send a really incredible swamp person back to the Senate like JoeDonnelly, or you can send us Republicans like Mike Braun to drain the swamp."

Or, he told the crowd, you can send us Mike Braun. The audience awarded that comment by chanting, "Drain the swamp!"

Vice President Pence reminded Hoosiers the same thing - that Donnelly has been a no show on big, important votes.

Hoosiers deserve to know when @realDonaldTrump asked Joe Donnelly to support the policies that Indiana needs. Joe Donnelly voted no.

Pence unloaded his ire in a similar fashion on another moderate Democrat in Congress who voted against tax reform. When Sen. Joe Manchin (WV) voted against the tax cuts, he subsequently turned his back on working families, Pence told West Virginians. He had the same message for Sen. Heidi Heitkamp in North Dakota.